Bifunctional Perovskite Oxide Electrocatalysts for the Oxygen Reduction and Oxygen Evolution Reactions
Embargoed until 2025-11-13
Author
Date
2023Type
- Doctoral Thesis
ETH Bibliography
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Abstract
The rise in greenhouse gas emissions since the industrial revolution has spurred the development of renewable energy. Unified regenerative fuel cells (URFC) are promising devices for energy conversion and combine a hydrogen fuel cell and water electrolyzer in one device. However, currently, URFCs suffer from low round trip efficiencies and short lifetimes due in part to the high overpotentials and slow kinetics of the oxygen reduction (ORR) and oxygen evolution (OER) reactions that occur at the oxygen electrode. As a result, the development of high performing and stable bifunctional catalysts is essential for the advancement of URFCs. With this motivation, this thesis explores perovskites as bifunctional catalysts for ORR and OER, with the focus on understanding the reaction mechanisms and the catalyst properties that lead to activity. Overall, the knowledge attained during this work allows for the careful design of new bifunctional perovskite catalysts and, ultimately, advances the performance and lifetime of URFC devices. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000641463Publication status
publishedExternal links
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Publisher
ETH ZurichSubject
ORR; OER; electrocatalysis; perovskite; BifunctionalOrganisational unit
03910 - Schmidt, Thomas J. / Schmidt, Thomas J.
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ETH Bibliography
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